centos7命令

centos7命令:

查看ip  : ip addr

怎么重启网络: systemctl restart network

怎么关闭防火墙：systemctl stop firewalld

开启：systemctl start firewalld

查看防火墙状态：firewall-cmd --state

 关机命令：shutdown /poweroff

shutdown:shutdown -h now  #立即关机（shutdown -h 10   #10分钟后关机）

重启命令：shutdown或reboot

shutdown:shutdown -r now  #立即重新启动  （shutdown -r +10  #10分钟之后重启）

卸载mysql

[root@localhost local]# rpm -e MySQL-server-5.6.17-1.el6.i686

 rpm -qa|grep mysql(查询出来的东东yum remove掉)

mysql卸载 

https://www.cnblogs.com/Lenbrother/articles/6203620.html

 https://www.cnblogs.com/cyl048/p/6879085.html

 安装mysql

https://blog.csdn.net/a774630093/article/details/79270080

https://blog.csdn.net/qq_40087415/article/details/79367151(yiban)

https://blog.csdn.net/ztynet/article/details/51698614(几个)

https://www.cnblogs.com/huiandong/p/9973786.html